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1// SPDX-License-Identifier: GPL-2.02 3#define IO_POLL_ALLOC_CACHE_MAX 324 5enum {6 IO_APOLL_OK,7 IO_APOLL_ABORTED,8 IO_APOLL_READY9};10 11struct io_poll {12 struct file *file;13 struct wait_queue_head *head;14 __poll_t events;15 int retries;16 struct wait_queue_entry wait;17};18 19struct async_poll {20 struct io_poll poll;21 struct io_poll *double_poll;22};23 24/*25 * Must only be called inside issue_flags & IO_URING_F_MULTISHOT, or26 * potentially other cases where we already "own" this poll request.27 */28static inline void io_poll_multishot_retry(struct io_kiocb *req)29{30 atomic_inc(&req->poll_refs);31}32 33int io_poll_add_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);34int io_poll_add(struct io_kiocb *req, unsigned int issue_flags) HWJS_SUSPENDS;35 36int io_poll_remove_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);37int io_poll_remove(struct io_kiocb *req, unsigned int issue_flags) HWJS_SUSPENDS;38 39struct io_cancel_data;40int io_poll_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd,41 unsigned issue_flags) HWJS_SUSPENDS;42int io_arm_poll_handler(struct io_kiocb *req, unsigned issue_flags) HWJS_SUSPENDS;43bool io_poll_remove_all(struct io_ring_ctx *ctx, struct task_struct *tsk,44 bool cancel_all) HWJS_SUSPENDS;45 46void io_poll_task_func(struct io_kiocb *req, struct io_tw_state *ts) HWJS_SUSPENDS;47